Irrigator operates on a daily basis generating demands and extracting water to meet these demands via the water user and supply nodes. Irrigator maintains a daily water balance for each cropping area during its planting season to calculate the daily soil water deficit and an irrigation requirement. The irrigation requirements are used by the Water User to generate orders and opportunistic requests and to subsequently place orders and requests and to extract water from a water source.The model can be applied in both regulated and unregulated systems.
Configuring generic crop settings
Before configuring an Irrigator Demand Model on a Water User node, you must specify crop factors for the entire scenario using Crop factors defined in this way are accessible for each water user node. More details regarding this can be found under IQQM CropMod2 Demand Model(insert link here)
District Configuration
This describes a number of parameters that can be set at an irrigation district level. The maximum irrigated area is a nominal area that can be set because the total area planted within a water year is not limited other than through the planted area. A warning is then recorded runtime if the planted area exceeds the maximum irrigated area of the district. Soil moisture capacity is specified at the district level and this is assumed constant for all crops in the district. If user has specified irrigation season, orders and requests are only generated within the season. Both irrigation and opportunist requirements can be limited to within an irrigation season.
Feature Editor - Irrigator Demand Model (District Configuration)
Supply Escape
The district requirement is adjusted to allow for any district delivery supply escapes and losses associated with delivering water to the district. This is optional in the demand model configuration and can be added by right clicking the Irrigator (menu item) and selecting Supply Escape. It is expressed as a percentage
Return Efficiency
Returned water is surplus drainage water from irrigation or from rainfall runoff. This water can be redirected into the on farm storage or otherwise can be returned to the river via a confluence node. This is optional in the demand model configuration and can be added by right clicking the Irrigator (menu item) and selecting Return Efficiency. It is expressed as a percentage
Climate Configuration
Crop Configuration
Include notes on Fallow.
Soil Configuration
Planting Decision
Soil Depletion
Economics
Crop Runoff
Crop Deep Percolation